package com.mini6410.LED;

import com.friendlyarm.AndroidSDK.HardwareControler;
import com.mini6410.R;

import android.app.Activity;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.ToggleButton;

/**
 * 
 * ClassName:LEDActivity
 * Reason:	 LED Demo
 *
 * @author   snowdream
 * @version  
 * @since    Ver 1.1
 * @Date	 2011	2012-03-11		16:07
 *
 * @see 	 
 */
public class LEDActivity extends Activity implements ToggleButton.OnCheckedChangeListener {

	/*四个LED灯，编号ID依次为：LED 0，LED_1，LED_2，LED_3*/
	public static final int LED_0 = 0;
	public static final int LED_1 = 1;
	public static final int LED_2 = 2;
	public static final int LED_3 = 3;

	/*LED灯的状态： ON 表示点亮， OFF表示熄灭*/
	public static final int OFF = 0;
	public static final int ON = 1;


	private int mledID = LED_0; 
	private int mledState = OFF;


	private boolean mStop = false;

	/*LED编号数组*/
	private int[] mleds = new int[]{LED_0,LED_1,LED_2,LED_3};

	/*5个开关按钮*/
	private ToggleButton mToggleButton_led0 = null;
	private ToggleButton mToggleButton_led1 = null;
	private ToggleButton mToggleButton_led2 = null;
	private ToggleButton mToggleButton_led3 = null;
	private ToggleButton mToggleButton_ledrandom = null;


	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.leddemo);

		initUI();
	}
	
	@Override
	protected void onDestroy() {
		mStop = true;
		super.onDestroy();
	}


	/**
	 * 
	 * initUI: 初始化UI
	 *
	 * @param   
	 * @return     
	 * @throws 
	 */
	public void initUI(){
		mToggleButton_led0 = (ToggleButton)findViewById(R.id.button_led0);
		mToggleButton_led1 = (ToggleButton)findViewById(R.id.button_led1);
		mToggleButton_led2 = (ToggleButton)findViewById(R.id.button_led2);
		mToggleButton_led3 =  (ToggleButton)findViewById(R.id.button_led3);
		mToggleButton_ledrandom = (ToggleButton)findViewById(R.id.button_ledrandom);

		mToggleButton_led0.setOnCheckedChangeListener(this);
		mToggleButton_led1.setOnCheckedChangeListener(this);
		mToggleButton_led2.setOnCheckedChangeListener(this);
		mToggleButton_led3.setOnCheckedChangeListener(this);
		mToggleButton_ledrandom.setOnCheckedChangeListener(this);		
	}

	/**
	 * 
	 * onCheckedChanged: 开关按钮监听器
	 *
	 * @param   buttonView 当前被按下的按钮对象；isChecked表示该按钮的开关状态
	 * @return     
	 * @throws 
	 */
	public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
		ToggleButton mToggleButton = (ToggleButton)buttonView;

		if(isChecked)
			mledState = ON;
		else
			mledState = OFF;

		switch (mToggleButton.getId()) {
		case R.id.button_led0:
			mledID = LED_0;
			setLedState(mledID, mledState);
			break;
		case R.id.button_led1:
			mledID = LED_1;
			setLedState(mledID, mledState);		
			break;
		case R.id.button_led2:
			mledID = LED_2;
			setLedState(mledID, mledState);				
			break;
		case R.id.button_led3:
			mledID = LED_3;
			setLedState(mledID, mledState);				
			break;	
		case R.id.button_ledrandom:
			if(isChecked){
				mStop = false;
				RandomLight();
			}else{
				mStop = true;
				setALlLightsOff();
			}
			break;	
		default:
			break;
		}
	}

	/**
	 * 
	 * setLedState: 设置LED灯的开关
	 *
	 * @param   ledID LED灯编号；ledState LED灯的开关状态
	 * @return     true，表示操作成功；否则返回 false。
	 * @throws 
	 */
	public boolean setLedState(int ledID, int ledState){
		boolean ret = false;
		int result = -1;

		result = HardwareControler.setLedState(ledID, ledState);

		if(result == 0)
			ret = true;
		else
			ret = false;

		return ret;
	}


	/**
	 * 
	 * RandomLight: 随机点亮LED灯
	 *
	 * @param  
	 * @return     
	 * @throws 
	 */
	public void RandomLight(){
		new Thread(){

			int mledNum =  mleds.length;
			int mrandom = 0;

			@Override
			public void run() {

				while(!mStop){
					/*从0 1 2 3范围内产生一个整数随机数*/
					mrandom = (int)(Math.random()*(mledNum));

					/*随机点亮一盏LED灯，然后关闭其他的LED灯*/
					for(int i = 0; i <mleds.length; i++){
						if(i == mrandom){
							setLedState(mleds[i], ON);
						}else{
							setLedState(mleds[i], OFF);
						}

					}

					try {
						sleep(200);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}

			}}.start();
	}

	/**
	 * 
	 * setALlLightsOff: 熄灭全部的LED灯
	 *
	 * @param  
	 * @return     
	 * @throws 
	 */
	public void setALlLightsOff(){
		for(int i = 0; i <mleds.length; i++){
			setLedState(mleds[i], OFF);
		}
	}

	/**
	 * 
	 * setALlLightsOn: 点亮全部的LED灯
	 *
	 * @param  
	 * @return     
	 * @throws 
	 */
	public void setALlLightsOn(){
		for(int i = 0; i <mleds.length; i++){
			setLedState(mleds[i], ON);
		}
	}	
}
